RE: ATT Uverse/DSL Network Engineer DNS question

2013-02-06 Thread Tim Haak
...@hotmail.com Subject: Re: ATT Uverse/DSL Network Engineer DNS question Date: Tue, 5 Feb 2013 21:15:46 + CC: nanog@nanog.org Here in Orange County, CA I've got a /28 with Uverse Residential with the same DNS servers as mentioned below. FYI On 2/5/13 1:10 PM, Jonathan Lassoff j

ATT Uverse/DSL Network Engineer DNS question

2013-02-05 Thread Tim Haak
Hi, Can a ATT Uverse/DSL Network Engineer answer a question about the DNS server IPs that are handed out to customers please? I am currently testing from a Florida IP. Can you please let me know if all Uverse and DSL customers across the United States only use these 2 IPs as their

Re: ATT Uverse/DSL Network Engineer DNS question

2013-02-05 Thread Jonathan Lassoff
These appear to be an anycasted service, as I reach different destinations based on my source address. Hopefully each deployment has unique origin IPs for their recursive queries. I would recommend against looking at RIR registration data to determine IP location. There's often little to no

Re: ATT Uverse/DSL Network Engineer DNS question

2013-02-05 Thread Jonathan Lassoff
On Tue, Feb 5, 2013 at 1:10 PM, Jonathan Lassoff j...@thejof.com wrote: These appear to be an anycasted service, as I reach different destinations based on my source address. Hopefully each deployment has unique origin IPs for their recursive queries. Just confirmed this. As these

Re: ATT Uverse/DSL Network Engineer DNS question

2013-02-05 Thread Warren Bailey
Here in Orange County, CA I've got a /28 with Uverse Residential with the same DNS servers as mentioned below. FYI On 2/5/13 1:10 PM, Jonathan Lassoff j...@thejof.com wrote: These appear to be an anycasted service, as I reach different destinations based on my source address. Hopefully each